Dolly Parton's sister asks for prayers as the singer faces health challenges

Freida Parton is asking for prayers for her sister and country music icon Dolly Parton as the singer continues to face health challenges.

In a Facebook post, Freida said she was "up all night praying" for Dolly, adding that "many of you know she hasn't been feeling her best lately."

"I truly believe in the power of prayer," Freida wrote. "I have been led to ask all of the world that loves her to be prayer warriors and pray with me."